rozwiąz uklad równani : {(2x-10=4(y+1) { 2(x-3)-9=1-y

{(2x-10=4(y+1) { 2(x-3)-9=1-y 2x-10=4y+4 2x-6-9 = 1-y 2x-4y=14 /*(-1) 2x +y = 16 -2x +4y = -14 2x +y =16 5y = 2 / :5 y = 2/5 y=2/5 2x+ 2/5 = 16 y = 2/5 2x = 15 i 3/5 / :2 y = 2/5 x = 7 i 4/5 :)

{2x-10=4y+4 {2x-6-9=1-y {2x-4y=4+10 {2x+y=1+6+9 {2x-4y=14 {2x+y=16 |x4 {2x-4y=14 {8x+4y=64 10x=78 x=7,8 2*7,8-4y=14 15,6-4y=14 -4y=14-15,6 -4y=-1,6 |:(-4) y=0,4